APA aipamena

Barr, N. A. Reforming pensions. Oxford University Press.

Chicago Style aipamena

Barr, N. A. Reforming Pensions. Oxford University Press.

MLA aipamena

Barr, N. A. Reforming Pensions. Oxford University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.